looking for simple keyboard controller (8042 compatible - 81

[Oliver Schmid]

hi group,

As mentioned I'm looking for a simple "8042-like" keyboard controller
to
get standard keyboard support into a 8-bit MCU environment.

I don't care if other functions (aka super I/O) are integrated, it
should
just be very simple to integrate and _currently_ available somewhere
in europe.

I've been looking for the last week, but I haven't found a thing.

I'd be thankful for any further hints.

Another idea would be using a UART 16550 to handle this, but i'm not
quite sure, if this would work proberly - any ideas?

regs,
oliver


btw, I'm aware of the keyboard-protocol,but I don't want to put
additional load
onto the MCU, so I'd like to "outsource" the keyboard-handling to an
external
unit - get a interrupt when a character is ready at the buffered
keyboard
controller.

 

[petrus bitbyter]

"Oliver Schmid" <o.sch@gmx.at> schreef in bericht
news:4d970b56.0409080302.6fd450a4@posting.google.com...

hi group,

As mentioned I'm looking for a simple "8042-like" keyboard controller
to
get standard keyboard support into a 8-bit MCU environment.

I don't care if other functions (aka super I/O) are integrated, it
should
just be very simple to integrate and _currently_ available somewhere
in europe.

I've been looking for the last week, but I haven't found a thing.

I'd be thankful for any further hints.

Another idea would be using a UART 16550 to handle this, but i'm not
quite sure, if this would work proberly - any ideas?

regs,
oliver


btw, I'm aware of the keyboard-protocol,but I don't want to put
additional load
onto the MCU, so I'd like to "outsource" the keyboard-handling to an
external
unit - get a interrupt when a character is ready at the buffered
keyboard
controller.

Guess it will not be easy to find an original 8042. But almost any micro can
be programmed to accept AT-keyboard code. Lately found source code for a PIC
micro on the internet. It was meant to use the incoming keycodes itself but
it can't be difficult to translate them to parallel ASCII (or whatever you
need) and make it pull the interrupt of your MCU.

petrus bitbyter


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